Stop motion for drawing frames



W. J. SCOTT 5101 MOTION FOR DRAWING FRAMES Filed May 31, 1928 2Sheets-Sheet 1 IN VEN TOR.

A TTORNEYS Feb. 5, 1929. 1,701,128 W. J. SCOTT STOP MOTION FOR DRAWINGFRAIBS Filed May 51, 1928 2 Sheets-Sheet 2 INVENTOR.

v H l/ l 62800 40 '19 BY ATTORNEYS.

Patented Feb. 5, 1929.

UNITED STATES WALTER J. SCOTT, OF WOONSOCKET, RHODE ISLAND.

STOP MOTION FOR DRAWING FRAMES.

Application filed May 31,

This invention relates to an improved stop motion for drawing frames;and has for its object to provide in such a stop member an electriccircuit controlled by a movable contact member located above the upperbearing block for the spindle, and against which member the sliver isdeposited when an end breaks down or when the sliver is fed faster thanit is taken up, the building up of which will effect a movement of thecircuit closure to stop the machine.

A further object of the invention is to provide a sliver receivingchamber adjacent the upper end of the spindle on one or more of thewalls of which chamber is located a movable circuit closing memberwhereby when a surplus of the sliver collects in this chamber its weightor pressure effects a movement of one or more of these circuit closersto stop the machine.

With these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described, andparticularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a side elevation showing my improved circuit closing deviceas applied to a drawing frame.

Figure 2 is an enlarged View partly in section showing the front wallplate as supported on the hinged door of the bearing block, the circuitclosing member being mounted on this plate.

Figure 3 is a planview of the parts shown in Figure 2.

Figure 4 is a top view ofthe bearing block showing a second cooperatingcircuit closing member as mounted on the upper face of the block.

Figure 5 is an elevation sectioned on line 5-5 of Figure 4 showing thetwo contact members, one on the front wall and one on the upper face ofthe bearing block.

Figure 6 is an enlarged elevation partly in section showing portions ofthe draft rolls and their position relative to the upper spindle bearingblock, also illustrating the building up of the sliver in the chamberwhich building up affects the circuit closers on the walls of thechamber to stop the machine.

Figure 7 is a view partly in section showing the tripper and solenoidwhich effects the releasing action of the tripper to permit the throwingof the belt to stop the machine.

Figure 8 is a general diagrammatic View 1928. Serial No. 281,970.

illustrating the electric circuit as connected to the circuit closuresand to the stop motion of the machine.

It is found in practice that in some in- 6 stances the upper end of thespindle is substantially flush with the upper face of the upper bearingblock and that when for any reason the sliver is broken or is fed fasterthan it is taken up on the package or spool, it has a tendency to befolded back and forth upon itself and so build up on the upper face ofthis bearing block and finally fall over to become tangled up with theother running parts. My present invention locates the circuit closingmembers in such a way that the building up of this sliver upon thisbearing block will stop the machine, and I have herein shown one meansfor accomplishing this which is to support a front wall plate on thisblock opposite the spindle bearing to extend up a substantial distanceabove the face of the block, which wall serves to cooperate with theupper face of the block and the draft rolls to provide a chamber intowhich this surplus sliver may be folded and on this wall plate I mount acontact finger normally spaced at its free end from its contact tomaintain an open circuit, whereby when sliver for any reason is nottaken up as fast as fed by the draft rolls and builds up in thischamber, it is caused to lie against this delicately poised contactfinger and move its free end to close the circuit and stop the machine.In other cases I locate one or more contact fingers on the upper face ofthe bearing block itself so that the weight of the sliver in being builtup upon the block moves these. circuit closing members to close thecircuit and stop the machine. This sliver when so folded into thechamber, after the machine is stopped, may be readily unfolded and itsend passed again through the spindle and attached to the spool and theoperation continued without wasting the sliver which was nicely foldedinto the chamber; and the following is a detailed description of thepresent embodiment of this invention and showing one means by whichthese advantageous results may be accomplished:

With reference to the drawings, 10 and 11 designate the upper and lowerdraft rolls respectively and 12 the bearing block for the upper end ofthe spindle 13. These blocks are supported on an arm 15 from the rail 14in the desired position to receive the upper end of the spindle. Thefront edge of each t these=blocl1s is prmsided with a plate 16' hingedat 17 to swing open and permit the positicnin of the upper end bearingof the spindle and on this gate I have formed .an upwardly-extendingwall plate 18 on the inner face of which is supported a flexible contactfinger 19 which is insulated from the plate as at 20 where itispermanently-secured at its lower end by a bolt 21. This bearing block ispositioned relative to the rolls 10 and 11 to cooperate therewith andform the bottom wall of the chamber while the lower roll ll will-serveas-a rear wall for the chamber, and the plate 18 will serve as a frontwall for'the chainber into which t-he sliver is deposited.

111 some instances instead of relying alone upon the contact in-ger- 19on thefront-wall platelSI mount either one'or a pair of fingers '22 uponthe upper'face ef t-he bearing block 'wh-ich fingers are alsoconnected'toan electric circuit 33 wherel'iy the mere weight of the'bniltup'sliver will force these fingers 22 down to-engage theircontacts and closethe circuit andstop the machine.

I haveherein shown a. package spool 23 as mounted: on'the spindle 13which spoolrests :upon a -rail i l-Which is raised andzlowered Nib-roughtheusual rack 25 and pinion 26 and thesliverQT: after passing throughthe upper end of thespindle and outthi aigh an opening'28 therein isfedthrough an eye 29 down along the flyer armBOeand through its guide eye31' and is led to be wound upon the spool .=23, whereby:if forany'reason the sliver-be comes 'broken etany point between the nipof=the draft rolls 10 and 11 and the point where it is laid.upon-thespool or package 23, it is i no longer drawn sthrough thespindle but will =.be deposited in the chamber 32 'formed by'the wallsabove described and folded back and forth upon itself as bestillustrated in Figure 6, whereby the weight of the built up folds willact upon the circuit closing members 22 or the pressure of these folds=will move the contact finger 19' to close the circuitand stop themachine.

'After i the machine eis stopped this nicely :folded sliverwhich isnotzinjured may'be :again threaded through ithe spindle vand around ontothespool or package andthe machineaagain started without wasting t-hatfolded portion which otherwise "would fall down over the bearingblock'EO lDQ-COHAG entangled with't'he otherrunningparts ofzthe machine andbe destroyed, besides taking considerable timevtorremovezthe wasteportions from engagement *with the parts around which it has becomewound or-twisted.

One means of" stopping: the machine when the circuit is closed: is best:illustrated in Figures '7 and '8, in which the contactfingers are causedto close the circuit through thewi'res 33 an'dithe closing ofthiscircuit serves-to energizethe solenoid magnet 34 to=withdraw 38-tocarry the belt from the tight pulley to the. loose pulley 40 and so stopthe machine.

By my improved motion the machine is stopped wheat-he sliver is notfeeding properly and tne free end portion preseri'etl and .is not:injured and the end may be again threaded up withoutwasting the foldedport-ion.

The foregoing description is directed solely towards the constructionillustrated, but I desire ittobe understood that I reserve-theprivilegeofresorting to all the mechanical changes to which the deviceis susceptible, the invention being defined and limited only by" theterms ofthe appended claims.

1. Blua; stop mot-ion ifordrawing frames, a set of draft rolls, aspindle, .anmpper-bearing for said spindle, a package for: taking up thesliver assfed'by-sa-id!rolls, a chamber formed adjacent said bearingandrolls, an electric circuit, and anelectric circuit closure, in saidchamber positioned to: beralfected by the accumulation of 'the sliveninsaid chamber to close the circuit and stop the-machine.

In astop-motion'for drawing frames, a set of draft rolls, a spindle, anupper-bearing block :for :-the spindle, means including the rollsand-the block-for zforlming asliver receiving chamber, an =-electriccircuit, a flexible circuit closing member :in the chamber arranged tobe moved by a collected mass of sliver in the chamber; to close thecircuit and SlLOPatllQ machine.

3. :In ;a stop-motion 'fordrawing ifrarnes, upper and lower draft rolls,a; spindle, means operated-bythe: spindle foiwlaying the sliver onto abobbinasfedby the rolls, an upper bearing block for said spin dle,-n'ieans coopcrating withsaid-block and rolls-lo form a sliver receivingc-bambenwan electric circuit closer in the ehamben positioned to beaffected by pressure of collected sliver in the chamber for closing: thecircuit to stop: the machine,

.4. %In 1 a stop anotion fordrawing frames, a set ofdraft rolls, a.spindlze,ineaus for wind ing the sliver into rjiackage form as fed bysaid rolls, walls forming a sliver receiving ehameer'adiaeenti the upperend of thespindle, an electriccircuit, a flexible member supported onsaidchamber walls and a-tlected by the collecting of sliver in saidchamber to olese-f the circuit and stop the machine.

5. Ina-stop motion-for drawlng frames, a

set ofdraft-rells, a spindle,-rneaus for wind ingithesliver into packageform as fed by said-rolls an hpperbearing block for said spindle, wallsincluding. said block,and rolls forming-asliver receiving. chamber abovethe bloek,. an. electric circuit, .a flexible member supported on saidchamber walls and affected by the collecting of sliver in sf chamber tochase the circuit-and stop-the machine.

6. In a stop motion for drawing frames, a set of draft rolls, a spindle,means for winding the sliver into package form as fed by said rolls, anupper bearing block for said spindle, a Vertically disposed platesupported on said block, said plate co-operating with said block androlls to form a sliver receiving chamber, an electric circuit, aflexible member supported on said front Wall plate arranged to he movedby a deposit of sliver in said chamber to close the circuit and stop themachine.

In testimony whereof I aflix my signature.

WALTER J. SCOTT.

